TableView下拉刷新

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1、下载EGORefreshTableHeaderView开源框架。

2、往应用中添加EGORefreshTableHeaderView.h文件、EGORefreshTableHeaderView.m文件、Resource目录，并且导入QuartzCore.framework

3、添加代码

 往tableview对应的类的头文件中添加如下代码 EGORefreshTableHeaderView *_refreshHeaderView;

    BOOL _reloading;

- (void)reloadTableViewDataSource;
- (void)doneLoadingTableViewData;

 往viewDidLoad函数里添加如下代码

if (_refreshHeaderView == nil) {
        
        EGORefreshTableHeaderView *view = [[EGORefreshTableHeaderView alloc] initWithFrame:CGRectMake(0.0f, 0.0f - self.tableView.bounds.size.height, self.view.frame.size.width, self.tableView.bounds.size.height)];
        view.delegate = self;
        [self.tableView addSubview:view];
        _refreshHeaderView = view;
        [view release];
        
    }
    
    //  update the last update date
    [_refreshHeaderView refreshLastUpdatedDate];

  再添加一些事件函数

#pragma mark -
#pragma mark Data Source Loading / Reloading Methods

- (void)reloadTableViewDataSource{
    
    //  should be calling your tableviews data source model to reload
    //  put here just for demo
    _reloading = YES;
    
}

- (void)doneLoadingTableViewData{
    
    //  model should call this when its done loading
    _reloading = NO;
    [_refreshHeaderView egoRefreshScrollViewDataSourceDidFinishedLoading:self.tableView];
    
}

#pragma mark -
#pragma mark UIScrollViewDelegate Methods

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{
    
    [_refreshHeaderView egoRefreshScrollViewDidScroll:scrollView];
    
}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{
    
    [_refreshHeaderView egoRefreshScrollViewDidEndDragging:scrollView];
    
}

#pragma mark -
#pragma mark EGORefreshTableHeaderDelegate Methods

- (void)egoRefreshTableHeaderDidTriggerRefresh:(EGORefreshTableHeaderView*)view{
    
    [self reloadTableViewDataSource];
    [self performSelector:@selector(doneLoadingTableViewData) withObject:nil afterDelay:3.0];
    
}

- (BOOL)egoRefreshTableHeaderDataSourceIsLoading:(EGORefreshTableHeaderView*)view{
    
    return _reloading; // should return if data source model is reloading
    
}

- (NSDate*)egoRefreshTableHeaderDataSourceLastUpdated:(EGORefreshTableHeaderView*)view{
    
    return [NSDate date]; // should return date data source was last changed
    
}

 最后，自己配置数据源进行测试。